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ASTILBE 'Amethyst'

Image of Astilbe 'Amethyst'

Mark Kane

Family

Saxifragaceae

Botanical Name

ASTILBE 'Amethyst'

Plant Common Name

Amethyst False Spirea, Astilbe, False Spirea

General Description

Amethyst astilbe is a clump-forming, herbaceous perennial with summertime plume flowers. It is a relatively tall hybrid cultivar with green leaves and a tall inflorescence of lilac-pink flowers which bloom in midsummer.

Amethyst false spirea requires full sun to partial shade and must be grown in moist, well-drained soils and perform best in shady locations. The flowerheads fade to attractive shades of brown in the fall, providing landscape interest through winter. They function best in shade gardens, borders, rock gardens, and are used for waterside plantings and should be divided every 3-4 years when overcrowding occurs.

Characteristics

  • AHS Heat Zone

    8 - 2

  • USDA Hardiness Zone

    4 - 8

  • Sunset Zone

    2a, 2b, 3a, 3b, 4, 5, 6, 7, 14, 15, 16, 17

  • Plant Type

    Perennial

  • Sun Exposure

    Full Sun, Partial Sun, Partial Shade

  • Height

    30"-36" / 76.2cm - 91.4cm

  • Width

    24"-36" / 61.0cm - 91.4cm

  • Bloom Time

    Summer, Late Summer

  • Native To

    Hybrid Origin

Growing Conditions

  • Soil pH

    Acidic, Neutral

  • Soil Drainage

    Well Drained

  • Soil type

    Loam

  • Tolerances

    Wet Site

  • Growth Rate

    Medium

  • Water Requirements

    Average Water

  • Habit

    Clump-Forming

  • Seasonal Interest

    Summer, Fall

Ornamental Features

  • Flower Interest

    Showy

  • Flower Color

    Pink, Lavender

  • Foliage Color (Spring)

    Green

  • Foliage Color (Summer)

    Green

  • Foliage Color (Fall)

    Green

  • Fragrant Flowers

    Yes

  • Fragrant Fruit

    No

  • Fragrant Foliage

    No

  • Bark or Stem Fragrant

    No

  • Flower Petal Number

    Single

  • Repeat Bloomer

    No

  • Showy Fruit

    No

  • Edible Fruit

    No

  • Showy Foliage

    No

  • Foliage Texture

    Medium

  • Foliage Sheen

    Glossy

  • Evergreen

    No

  • Showy Bark

    No

Special Characteristics

  • Usage

    Dried Flower / Everlasting, Bog Garden, Cutflower, Groundcover, Mixed Border, Rock Garden / Wall

  • Sharp or Has Thorns

    No

  • Invasive

    No

  • Self-Sowing

    No